<p>The Heart of a Dog is a novella that blends science fiction with sharp social commentary. The story centers on a stray dog named Sharik, who is taken in by a scientist, Professor Preobrazhensky. The professor performs an experimental surgery on Sharik, transplanting human organs into the dog, which causes Sharik to transform into a human-like creature named Poligraf Poligrafovich Sharikov.<br><br>Sharikov's transformation and subsequent behavi...